WO2015111878A1 - 퓸 제거 장치 - Google Patents
퓸 제거 장치 Download PDFInfo
- Publication number
- WO2015111878A1 WO2015111878A1 PCT/KR2015/000461 KR2015000461W WO2015111878A1 WO 2015111878 A1 WO2015111878 A1 WO 2015111878A1 KR 2015000461 W KR2015000461 W KR 2015000461W WO 2015111878 A1 WO2015111878 A1 WO 2015111878A1
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- Prior art keywords
- purge gas
- wafer
- wafer cassette
- exhaust
- fume
- Prior art date
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
- H01L21/67703—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations between different workstations
- H01L21/6773—Conveying cassettes, containers or carriers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/6732—Vertical carrier comprising wall type elements whereby the substrates are horizontally supported, e.g. comprising sidewalls
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/6735—Closed carriers
- H01L21/67383—Closed carriers characterised by substrate supports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/6735—Closed carriers
- H01L21/67389—Closed carriers characterised by atmosphere control
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/6735—Closed carriers
- H01L21/67389—Closed carriers characterised by atmosphere control
- H01L21/67393—Closed carriers characterised by atmosphere control characterised by the presence of atmosphere modifying elements inside or attached to the closed carrierl
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
- H01L21/67703—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations between different workstations
- H01L21/67724—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations between different workstations by means of a cart or a vehicule
Definitions
- the present invention relates to a fume removing apparatus.
- semiconductor manufacturing processes include processes such as etching, deposition, and etching, and most of these processes are performed with a process gas filled therein.
- Applicant Patent No. 10-1294143 discloses a wafer processing apparatus in which a fume removing function is provided in the cassette itself of the EFEM.
- An object of the present invention is to provide a fume removing apparatus for removing a process gas remaining on a wafer.
- the fume removing device includes a wafer cassette on which a wafer is loaded; And an exhaust unit configured to exhaust the fume of the wafer loaded on the wafer cassette, wherein the wafer cassette includes: a mounting table provided on both sides of the wafer cassette; And a front opening provided in the front and into which the wafer loaded on the mounting table enters and exits.
- the loading table includes an inclined portion that is inclined toward the wafer loaded on the mounting table toward the front opening portion. It may be provided with a purge gas outlet for supplying a purge gas to the wafer loaded on the mounting table.
- the space between the mounting tables provided on both sides of the front opening portion may be smaller than the diameter of the wafer loaded on the wafer cassette.
- the purge gas discharge port is provided with a plurality of at least a portion is provided on the inclined portion
- the mounting table further comprises a purge gas flow path for flowing the purge gas flowing into the loading table to the purge gas discharge port, the purge gas flow path And a plurality of branch flow paths branched from the main flow path to the plurality of purge gas outlets, respectively, wherein each of the plurality of branch flow paths is formed to have an obtuse angle with the main flow path.
- a plurality of purge gas outlets may be provided, at least a part of which is provided in the inclined portion, and the plurality of purge gas outlets may have a larger diameter as the purge gas outlets disposed closer to the front opening side.
- the stack may be spaced up and down so that the wafers may be stacked up and down in the wafer cassette, and the purge gas discharge ports may be provided at the stacks provided up and down to supply the purge gas to each of the stacked wafers. Can be.
- the mounting table may further include a pin for supporting the wafer.
- the wafer cassette may be provided at least partially transparent.
- a perforated plate provided on the rear surface to communicate the wafer cassette and the exhaust portion, the perforated plate may include a plurality of intake holes are provided with a longer width toward the top.
- the exhaust unit may include a compressed air discharge accelerator for supplying compressed air to control the exhaust pressure of the fume loaded in the wafer cassette.
- the compressed air discharge accelerator may include a tube communicating with an exhaust gas pressure sensor that detects an exhaust pressure of the fume, and an end of the tube may be provided to face an exhaust direction of the fume discharged through the compressed air discharge accelerator.
- It may further include a first sensor for detecting the presence of a wafer in the wafer cassette.
- the apparatus may further include a second sensor configured to detect whether the wafer loaded on the wafer cassette is loaded at a proper position.
- It may further include an illumination unit for illuminating the inside of the wafer cassette.
- a heating member for heating the inside of the wafer cassette comprising: an upper heater provided on an upper surface of a case of the wafer cassette; A lower heater provided on a lower surface of the case of the wafer cassette; And it may include a rod heater provided on the side of the case of the wafer cassette.
- the fume removing device includes: a main body; A wafer cassette detachably provided on the main body and on which a wafer is loaded; And an exhaust unit provided in the main body and configured to exhaust fume of the wafer loaded on the wafer cassette, wherein the wafer cassette comprises: a case surrounding the wafer loaded on the wafer cassette through an upper surface, both sides, and a lower surface thereof; It is provided on both sides of the case, the mounting table is provided with a plurality spaced apart up and down so that a plurality of wafers are stacked; And a perforated plate provided at a rear surface of the case to communicate the wafer cassette with the exhaust unit, wherein the loading table includes a purge gas discharge port provided at each of the loading tables provided in plural to supply purge gas.
- the purge gas supplied to the wafer through the discharge port may flow between the stacked wafers without being leaked to the outside of the wafer cassette and may be exhausted through the perforated plate to the exhaust unit.
- the mounting table may further include a pin for minimizing an area for supporting the wafer.
- the mounting table may be formed to have a width corresponding to a space between the wafer loaded on the pin and both side surfaces of the case.
- the bezel may further include a bezel connecting the wafer cassette and the main body to prevent the purge gas from flowing into the space between the wafer cassette and the main body.
- the wafer cassette may be detachably mounted to the base plate.
- the wafer cassette may further include a digital leveler for outputting an abnormal signal when the wafer cassette is not horizontally positioned when the wafer cassette is seated on the base plate.
- the main body includes a purge gas supply port through which a purge gas supplied from the outside is supplied, and the wafer cassette has a shape corresponding to the purge gas supply port, and a purge gas supply port coupling part selectively coupled to the purge gas supply port.
- the purge gas supply port coupling part may be coupled to the purge gas supply port, and the purge gas supplied to the purge gas supply port may be discharged to the purge gas discharge port of the loading table through the purge gas supply port coupling part.
- the purge gas supply port may include a protrusion, and the purge gas supply hole coupling part includes a groove having a shape corresponding to the protrusion, and when the purge gas supply hole coupling part is coupled to the purge gas supply port, the protrusion is connected to the groove. Can be inserted.
- the lower end of the main body may be provided with a caster rotatable, and a leveler that can be fixed to the main body by flowing up and down.
- An interface unit may be provided outside the main body, and the interface unit may include a display unit for outputting an operation state.
- the interface unit may further include a communication port capable of communicating with the outside.
- the main body is provided with a fume outlet for communicating the wafer cassette and the exhaust, the fume outlet may be variable in position.
- a fume removing apparatus in accordance with another embodiment of the present invention, includes a wafer cassette on which a wafer is loaded; And an exhaust unit configured to exhaust the fume of the wafer loaded on the wafer cassette, wherein the wafer cassette includes: a mounting table provided on both sides of the wafer cassette; And a purge gas supply port provided in the mounting table and supplying a purge gas to the wafer loaded on the mounting table, wherein the exhaust unit is configured to supply a fluid to control a rate of evacuation of the fume loaded in the wafer cassette. It may include an air exhaust accelerator.
- the compressed air discharge accelerator may include a compressed air discharge unit through which the supplied fluid flows into the compressed air discharge accelerator; And it may include a compressed air moving unit is formed so that the supplied fluid is evenly introduced throughout the compressed air discharge.
- the compressed air discharge accelerator may further include an expansion part provided to extend toward the exhaust direction of the fume so as to induce a flow direction of the fluid flowing through the compressed air discharge part.
- the compressed air outlet may vary in size.
- a regulator controlling a pressure of a fluid supplied to the compressed air discharge accelerator; And an exhaust gas pressure sensor for sensing exhaust pressure of the fume, wherein the regulator may be controlled by comparing the exhaust pressure and the atmospheric pressure of the fume measured by the exhaust gas pressure sensor.
- a tube communicating with the exhaust gas pressure sensor may be provided inside the compressed air discharge accelerator, and an end of the tube may be provided to face an exhaust direction of the fume exhausted through the compressed air discharge accelerator.
- the wafer cassette is provided with a perforated plate including a plurality of intake holes communicating with the exhaust portion, and the fume of the wafer passing through the perforated plate is guided by an upper hopper having a streamlined shape, at least a portion thereof, to flow into the exhaust portion. have.
- the fume guided by the upper hopper and flown to the exhaust portion may be discharged again by being guided by the lower hopper of the exhaust portion.
- the process gas remaining on the wafer can be efficiently removed.
- FIG. 1 is a perspective view showing a fume removing device according to an example of the present invention.
- FIG. 2 is a perspective view showing a fume removing device according to an example of the present invention.
- FIG 3 is an exploded perspective view showing a fume removing device according to an example of the present invention.
- Fig. 4A is a perspective view showing a structure related to the upper body of the fume removing device according to an example of the present invention
- Fig. 4B is a cross-sectional view taken from the line II ′ of (a).
- Fig. 5 is a plan view showing an upper body related configuration of a fume removing device according to an example of the present invention.
- FIG. 6 is a bottom view illustrating a fume removing device according to an example of the present invention.
- FIG. 7 is a perspective view showing a wafer cassette of a fume removing device according to an example of the present invention.
- FIG. 8 is a perspective view and a partially enlarged view showing a wafer cassette of a fume removing device according to an example of the present invention.
- FIG. 9 is a plan view showing a mounting table of a first wafer containing part of the fume removing device according to an example of the present invention.
- FIG. 10 is a cross-sectional view showing a coupling structure of the wafer cassette, the base plate and the upper body of the fume removing device according to the embodiment of the present invention.
- FIG. 11 is a perspective view showing an exhaust portion of a fume removing device according to an example of the present invention.
- FIG. 12 is a perspective view showing an interface portion of a fume removing device according to an example of the present invention.
- FIG. 13 is a configuration diagram for explaining a flow path of purge gas, compressed air, and fume in the fume removing device according to an example of the present invention.
- first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be “connected”, “coupled” or “connected”.
- FIG. 1 and 2 are perspective views showing a fume removing device according to an example of the present invention
- FIG. 3 is an exploded perspective view showing a fume removing device according to an example of the present invention.
- a fume removing apparatus may include a main body 100 and a wafer cassette 200.
- the main body 100 can form the external appearance of the fume removal apparatus which concerns on an example of this invention.
- the main body 100 may include, for example, a partition 101, a front plate 102, and a first hook 103.
- the partition 101 may be a reference for dividing the main body 100 into an upper main body 110 and a lower main body 120. That is, the upper part of the partition wall 101 may be referred to as an upper body 110, and the lower part of the partition wall 101 may be referred to as a lower body 120. In addition, the partition wall 101 may be referred to as a lower surface of the upper body 110 or an upper surface of the lower body 120. The upper body 110 and the lower body 120 will be described later.
- the partition 101 may be supported by a height adjusting device 310 of the base plate 300 to be described later, and a height fixing device 320 may be inserted and fixed. That is, the partition 101 may support the base plate 300, which will be described later.
- a gas supply path 101a may be provided below the partition 101 as illustrated in FIG. 10.
- a gas hereinafter referred to as "purge gas” supplied to a wafer to remove fume of the wafer supplied through the purge gas connection port 570, which will be described later, is purged of the wafer cassette 200.
- Supply to a gas pipe (not shown). That is, the gas supply path 101a communicates the purge gas connection port 570 with the purge gas pipe of the wafer cassette 200.
- the front plate 102 forms a front surface of the main body 100 and may contact the EFEM (not shown).
- the fume removing device may be a side storage provided on one side of the EFEM, where EFEM stands for Equipment Front End Module and supplies a wafer to a process module in a semiconductor production line. Means.
- the front plate 102 may be provided with a bezel 117 protruding toward the contacting EFEM side.
- the rear side of the front plate 102 may be provided with a first hook (103).
- the first hook 103 may be hooked with the second hook 111 of the upper body 110 to be described later, the front plate 102 through the hook coupling of the first hook 103 and the second hook 111. ) And the attachment and detachment of the upper body 110 is advantageous.
- the main body 100 may include the upper main body 110 and the lower main body 120 as an example.
- the upper body 110 and the lower body 120 will be described later.
- Fig. 4A is a perspective view showing the upper body related structure of the fume removing device according to an example of the present invention
- (b) is a sectional view seen from the line II ′ of (a)
- Fig. 5 is a It is a top view which shows the structure related to the upper main body of the fume removal apparatus which concerns on an example
- FIG. 6 is a bottom view which shows the fume removal apparatus which concerns on an example of this invention.
- the upper body 110 may include a second hook 111, a fastening part (not shown), a front opening 113, an upper surface 114, a side surface 115, and a bezel 117.
- a purge gas supply port 118 and a fume discharge port 119 may be included.
- the second hook 111 may be provided in a shape corresponding to the first hook 111 of the front plate 102 and may be hooked with the first hook 111.
- the second hook 111 may be formed such that the end of the hook faces downward, and the first hook 103 may be formed so that the end of the hook faces upward.
- the upper main body 110 can be removed from the front plate 102 only by lifting the upper main body 110 upward.
- the fastening part serves to couple the upper body 110 to the lower body 120. That is, the upper body 110 of the detachable type through the fastening portion may be firmly coupled to the lower body 120.
- the fastening part may include a configuration for screwing as an example. That is, the upper body 110 and the lower body 120 may be firmly fixed through the screw coupling.
- the front opening 113 is formed in front of the upper main body 110 and functions as a transfer passage of the wafer. That is, the wafer is supplied to the upper body 110 through the front opening 113 or the wafer is discharged from the upper body 110.
- the front opening 113 can be in communication with the EFEM and the wafer transfer robot arm (not shown) of the EFEM passes the wafer through the front opening 113 to the wafer cassette 200 inside the upper body 110.
- the wafer transfer robot arm of the EFEM may discharge the wafer loaded in the wafer cassette 200 inside the upper body 110 through the front opening 113.
- the upper surface 114 is a term referring to the upper side of the upper body 110.
- the upper surface 114 may include a transparent plate 114a.
- the user of the fume removing device according to an example of the present invention has an advantage of observing the situation inside the upper body 110 through the transparent plate 114a.
- the side surface 115 refers to a surface forming a side of the upper body 110, and may include a transparent plate 115a similarly to the upper surface.
- the user of the fume removing device according to an example of the present invention has an advantage of observing the situation inside the upper body 110 through the transparent plate 115a. have.
- the bezel 117 may be provided to protrude from the front plate 102.
- the bezel 117 may be partially inserted into the EFEM when combined with the EFEM through such a structure. Accordingly, the bezel 117 may be manufactured in consideration of the radius of rotation of the wafer transfer robot arm of the EFEM.
- the bezel 117 couples the wafer cassette 200 and the upper body 110 from the front as shown in FIG. 1, and the purge gas purged from the wafer cassette 200 is transferred to the wafer cassette 200 and the upper body. It may serve to prevent leakage into the space between the (110).
- the purge gas supply hole 118 may be connected to the purge gas supply hole coupling part 270 so that the purge gas supply hole coupling part 270 of the wafer cassette 200, which will be described later, is inserted and coupled thereto. It may be provided in a corresponding shape.
- the purge gas supply port 118 may be provided with the protrusion 118a which protrudes inward as an example.
- the purge gas supply port coupling part 270 is provided with a groove 271 having a shape corresponding to the protrusion 118a, and the upper body (ie, the protrusion 118a is inserted into the groove 271). 110 and the wafer cassette 200 may be combined.
- the fume discharge port 119 discharges fume (remaining process gas) generated from the wafer loaded on the wafer cassette 200.
- the wafer is processed in a process gas atmosphere (a state in which a process gas is provided inside the process chamber) in the process module. Even after the process is completed, the process gas remains on the wafer. However, the process gas remaining on such a wafer is problematic because it affects wafer damage or contaminates devices used in the process.
- the fume discharge port 119 communicates with the exhaust unit 400 to be described later, and serves as a passage for discharging fume, which is a process gas remaining on the wafer.
- the fumes remaining on the wafer accommodated in the wafer cassette 200 may flow along the upper hopper 260 of the wafer cassette 2000 to be introduced into the lower hopper 410 through the fume outlet 119 and then discharged. .
- the fume outlet 119 may be formed by the fume outlet forming unit 119a as shown in FIG. 4.
- the fume outlet forming unit 119a may be provided to be movable to change the position of the fume outlet 119.
- the lower body 120 may include a side surface 121, a lower surface 122, a fume outlet 123, a caster 124, a leveler 125, and a door 126. have.
- the side surface 121 may be provided with an interface unit 500 as shown in FIG. 2, which will be described later.
- a bottom surface of the lower body 120 may be formed, and a fume outlet 123, a caster 124, and a leveler 125, which will be described later, may be formed.
- the fume outlet 123 may communicate with the connection port 450 of the exhaust unit 400, which will be described later, and serve as a passage for discharging the fume exhausted through the exhaust unit 400 to the outside.
- the fume outlet 123 may be provided in a circular shape at the center of the lower surface 122 of the lower body 120 as an example, but is not limited thereto.
- the caster 124 is provided on the lower surface 122 of the lower main body 120 and serves to increase the ease of movement of the fume removing device according to an example of the present invention.
- the caster 124 is provided with wheels so that the fume removing device can be easily moved through the rotation of the caster 124.
- the leveler 125 is provided on the lower surface 122 of the lower main body 120 and serves to increase the fixing force of the fume removing device according to an example of the present invention.
- the leveler 125 may move up and down by rotation and may protrude from the lower surface 122 of the lower body 120 than the caster 124.
- the caster 124 is in a floating state, and thus, the user cannot easily move the fume removing device. It becomes a state.
- the leveler 125 may also be used to adjust the height when the fume removal device is installed in the EFEM.
- the user may turn the leveler 125 to move upward, and the caster 124 may contact the bottom surface on which the fume removing device is installed. In this state, the user can move the fume removing device by simply pushing the fume removing device.
- the leveler 125 may be moved downward to turn the leveler 125 downward so that the fume removing device may be firmly installed without moving.
- the door 126 may be provided on the side surface 121 of the lower body 120 to be selectively opened and closed. That is, the user can easily access the inside of the lower body 120 by opening and closing the door 126.
- the wafer cassette 200 in which the wafer is loaded is accommodated in the upper main body 110.
- the wafer cassette 200 may be described as being supported by the lower main body 120.
- the wafer cassette 200 will be described in detail below.
- FIG. 7 is a perspective view showing a wafer cassette of a fume removing device according to an example of the present invention
- FIG. 8 is a perspective view and a partially enlarged view showing a wafer cassette of a fume removing device according to an example of the present invention
- FIG. It is a top view which shows the loading table of the 1st wafer accommodating part of the fume removal apparatus which concerns on an example of this invention.
- the wafer cassette 200 of the fume removing device may include a case 210, a first wafer accommodating part 220, a second wafer accommodating part 230, and heating.
- the case 210 may form an appearance of the wafer cassette 200.
- the case 210 may be provided larger than the wafer to accommodate the wafer therein.
- the case 210 may be formed to be closed except for a portion corresponding to the front opening 113 of the upper body 110.
- purge gas injected from the purge gas outlet 226 of the first wafer accommodating part 220 to be described later may flow and be discharged only in the case 210. That is, when the case 210 is not provided, the purge gas discharged to the wafer flows through the entire upper body 110, and is used to remove the fume of the wafer compared to the case 210.
- the amount of purge gas will increase.
- the sealed structure of the case 210 may serve to save the amount of purge gas used to remove the fume of the wafer. This may be explained as the sealed structure of the case 210 improves the fume removal efficiency of the wafer.
- the case 210 may include a front opening 211 formed to a size corresponding to a position corresponding to the front opening 113 of the upper body 110.
- the front opening 211 of the case 210 may function as an access passage of the wafer.
- the case 210 may be formed in a closed structure except for the front opening 211 as described above.
- the case 210 may include an upper heater 241, a leveler 291, and the like on the upper surface 212.
- the upper heater 241 and the leveler 291 will be described later.
- the case 210 may include a first wafer accommodating part 220, a second wafer accommodating part 230, a side gas pipe 282, a rod heater, and the like on the side surface 213.
- the said 1st wafer accommodating part 220, the 2nd wafer accommodating part 230, the side gas pipe 282, and a rod heater are mentioned later.
- case 210 may include a perforated plate 250 and an upper hopper 260 on the rear surface 214.
- the perforated plate 250 and the upper hopper 260 will be described later.
- the case 210 has a lower heater 242, a purge gas supply port coupling part 270, a lower gas pipe (not shown), a first sensor 292, and a second sensor (not shown) on a lower surface 215. And an illumination unit 294 and the like.
- the lower heater 242, the purge gas supply port coupling unit 270, the lower gas pipe, the first sensor 292, the second sensor, and the lighting unit 294 will be described later.
- the first wafer accommodating part 220 supports a wafer and supplies a purge gas to the wafer. As illustrated in FIG. 8, one first wafer accommodating part 220 may be provided at both sides of the side surface 213 of the case 210.
- the first wafer accommodating part 220 may include a plurality of mounting tables 221 capable of loading one wafer in a vertically spaced form. The wafer may be accessible to the spaces between the plurality of mounting tables 221. In other words, the wafer transfer robot arm of the EFEM may access the wafer through spaced spaces between the plurality of mounting tables 221.
- the first wafer accommodating part 220 may support the plurality of wafers to be stacked in a state spaced apart from each other.
- the mounting table 221 may include an inclined portion 222 as an example. As shown in FIGS. 8 and 9, the inclined portion 222 protrudes toward the circular wafer loaded on the mounting table 221 as a part of the mounting table 221 to be inclined.
- the inclined portion 222 may be provided with a second purge gas outlet 226c which will be described later.
- the second purge gas outlet 226c supplies a purge gas to the front (front opening 211 direction) (see FIG. 8) of the circular wafer loaded on the mounting table 221 to supply the purge gas to the entire wafer.
- the inclined portion 222 of the mounting table 221 and the second purge gas discharge port 226c provided in the inclined portion 222 do not supply purge gas to the wafer loaded on the mounting table 221. It has a role to make sure there is no realm.
- the mounting table 221 may include a pin 223 for supporting the wafer.
- the mounting table 221 may be provided with a plurality of pins 223 to support the wafer.
- the pin 223 may have a thin rod shape as shown in FIG. 8 as an example.
- the mounting table 221 it may have a predetermined width (see w in FIG. 9).
- the purge gas supplied to the wafer loaded on the pin 223 is blocked by the mounting table 221 and the wafer so that the vertical flow is restricted only in the horizontal direction. That is, when the mounting table 221 has a width so as to fill the space between the wafer and the case 210, the vertical movement of the purge gas is limited by the mounting table 221 and the wafer, so the purge gas used for purging the wafer This has the advantage of saving the amount of. This may be described as improving the fume removal efficiency of the wafer in addition to the sealing structure of the case 210 mentioned above.
- the mounting table 221 may include a purge gas inlet 224 that accommodates the side gas pipe 282 that supplies the purge gas. That is, purge gas may be introduced into the mounting table 221 through the purge gas inlet 224.
- the mounting table 221 may be provided with a purge gas flow path 225 and the purge gas discharge port 226.
- the purge gas flow path 225 is a flow path that flows for the purge gas introduced through the purge gas inlet 224 to be discharged through the purge gas discharge port 226. That is, the purge gas discharge port 226 is a passage through which the purge gas introduced through the purge gas inlet 224 passes through the purge gas flow path 225.
- the purge gas discharged through the purge gas discharge port 226 is supplied to the wafer loaded on the mounting table 221.
- the purge gas flow path 225 may include a plurality of branch flow paths 225b, 225c, 225d and 225e branched from the main flow path 225a.
- the purge gas flow path 225 includes, for example, a main flow path 225a, a first branch flow path 225b, a second branch flow path 225c, a third branch flow path 225d, and a fourth branch flow path 225e. can do.
- the first branch passage 225b to the fourth branch passage 225e may be referred to in order from the front (the direction in which the wafer is supplied) to the rear.
- the first branch passage 225b to the fourth branch passage 225e may be provided such that an angle formed with the main passage 225a is an obtuse angle.
- a flow path for injecting a relatively small amount of purge gas from the first branch flow path 225b to the fourth branch flow path 225e may be disposed at a right angle or an acute angle with the main flow path 225a.
- Diameters of the first branch passage 225b, the second branch passage 225c, the third branch passage 225d, and the fourth branch passage 225e may be provided differently from each other.
- the diameter may be understood as a concept including an index indicating the size of the polygon, such as width and width.
- the diameters of the first branch flow path 225b, the second branch flow path 225c, the third branch flow path 225d, and the fourth branch flow path 225e range from the first branch flow path 225b to the fourth branch flow path 225b. It may become smaller toward the flow path 225e.
- the diameters of the first branch flow path 225b, the second branch flow path 225c, the third branch flow path 225d, and the fourth branch flow path 225e may be described later. It may have a size corresponding to the purge gas outlet 226c, the third purge gas outlet 226d, and the fourth purge gas outlet 226e. Therefore, the diameter may be reduced from the first purge gas outlet 226b to the fourth purge gas outlet 226e.
- the purge gas discharge port 226 which discharges the purge gas toward the front of the wafer.
- the purge gas discharged to the wafer flows from the front side (front opening 211 side) to the rear side (perforated plate 250 side), so that a larger amount of purge gas flows from the front side to the rear side of the wafer.
- the mounting table 221 may be provided with a fixture (not shown).
- a rod-shaped support member (not shown) may be inserted into the fixture to fix and support the plurality of mounting tables 221. That is, the plurality of mounting tables 221 may be fixedly supported to be spaced apart from each other through the fixing device.
- the mounting table 221 of the first wafer receiving portion 220 may be provided on both sides of the case 210 of the wafer cassette 200, at this time, the width between the mounting table 221 provided on both sides (B, see FIG. 8) may be provided to be smaller than the diameter of the wafer.
- This structure has the advantage of supplying purge gas from the front of the wafer as mentioned above. However, it may be a problem to load the wafer on the mounting table 221, but in the present invention may be formed so that there is no problem to enter and exit the wafer having a space between the mounting table 221.
- the second wafer accommodating portion 230 serves to support the wafer.
- the second wafer accommodating part 230 may be described as supporting the wafer by assisting the first wafer accommodating part 220.
- one second wafer accommodating part 230 may be provided on each side of the side surface 213 of the case 210.
- the second wafer accommodating part 230 may be provided at a rear side relative to the first wafer accommodating part 220.
- the second wafer accommodating portion 230 may include a mounting table 231 and a pin 232 protruding from the mounting table 231.
- the pin 232 serves to support the wafer from below.
- the pin 232 of the second wafer accommodating portion 230 may be provided in the form of a thin rod having the same shape as the pin 223 of the first wafer accommodating portion 220, thereby minimizing a contact area with the wafer. can do.
- the heating member 240 serves to heat the inside of the wafer cassette 200.
- the heating member 240 may include, for example, an upper heater 241, a lower heater 242, and a rod heater (not shown).
- the upper heater 241 may be provided on the upper surface 212 of the case 210.
- the lower heater 242 may be provided on the lower surface 215 of the case 210.
- a plurality of rod heaters may be provided on the side surface 213 of the case 210.
- the heating member 240 may be evenly disposed on the upper surface 212, the side surface 213, and the lower surface 215 of the case 210, as in the salping, to evenly heat the inside of the wafer cassette 200.
- the perforated plate 250 may be provided on the rear surface 214 of the case 210 as an example.
- the perforated plate 250 may include a plurality of intake holes 251.
- the intake hole 251 is a passage through which fume and purge gas generated from the wafer accommodated in the wafer cassette 200 are discharged.
- the shape of the intake hole 251 may be provided as a date as an example, but is not limited thereto. That is, the intake hole 251 may be formed in various ways, such as a circle, a polygon, if only the role of the discharge passage of the fume and the purge gas can be performed. However, preferably, the intake hole 251 may be provided to be wider toward the upper portion (see FIG. 8).
- the fume and the purge gas in the wafer cassette 200 may be uniformly discharged both up and down.
- the fume and the purge gas are discharged through the fume outlet 119 provided in the partition 101 corresponding to the lower surface of the upper body 110 through the upper hopper 260 provided on the rear surface of the perforated plate 250. This is because the flow path of the fume and purge gas is faster than the top at the bottom of the wafer cassette 200 located relatively close to the fume outlet 119.
- the upper hopper 260 serves to guide the fume and purge gas discharged through the intake hole 251 of the perforated plate 250 to the fume discharge port 119 of the upper body 110.
- the upper hopper 260 may include, for example, an inclined portion 261, a streamlined portion 262, and a discharge passage 263, as shown in FIG. 7.
- the inclined portion 261 is positioned at the upper portion of the upper hopper 260 to guide the fume and purge gas discharged through the intake hole 251 toward the fume discharge port 119 located at the lower portion.
- the streamlined portion 262 is positioned below the inclined portion 261 and guides the fume and the purge gas to the fume discharge port 119.
- the streamlined portion 262 may have a streamlined structure such that there is no dead area where the fume and purge gas are stagnant.
- the discharge passage 263 may be provided below the streamlined portion 262 and inserted into the fume outlet 119. The fume and the purge gas discharged through the fume discharge port 119 are introduced into the lower hopper 410 of the exhaust unit 400 to be described later, which will be described later.
- the purge gas supply coupler 270 may be inserted into the hollow 301 of the base plate 300 and the purge gas supply 118 of the upper body 110 as shown in FIG. 10.
- the purge gas supply port coupling part 270 is coupled to the hollow 301 and the purge gas supply port 118 and, when coupled in this manner, receives a purge gas supplied from a gas supply path (see 101a in FIG. 10). It becomes the state that I can.
- the purge gas supplied from the gas supply path 101a may be discharged to the wafer surface through the purge gas discharge port 226 of the mounting table 221 through a purge gas pipe (not shown) which will be described later.
- the purge gas supply port coupling part 270 may include a groove 271 as an example.
- the groove 271 may be provided in a shape corresponding to the protrusion 118a of the upper body 110.
- the protrusion 118a may be inserted into the groove 271 to form a firm coupling force.
- the binding force between the purge gas supply port 118 and the purge gas supply port coupling part 270 is improved through such a structure, leakage of the purge gas may be prevented.
- a purge gas pipe serves to supply a purge gas which is connected to the purge gas supply coupler 270 and supplied to the purge gas inlet 224 of the first wafer accommodating part 220.
- the purge gas pipe may include, for example, a lower gas pipe (not shown) and a side gas pipe 282.
- the lower gas pipe may be arranged along the lower surface 215 of the case 210 as an example.
- the lower gas pipe may connect the purge gas supply port coupling part 270 and the side gas pipe 282. That is, the lower gas pipe may supply the purge gas supplied through the purge gas supply port coupling part 270 to the side gas pipe 282.
- the side gas pipe 282 may be coupled to the purge gas inlet 224 to supply the purge gas to the purge gas flow path 225.
- the leveler 291 serves to detect whether the wafer cassette 200 is installed to be horizontal.
- the leveler 291 may be a digital leveler as an example. In this case, there is an advantage that the measured value of the horizontal of the wafer cassette 200 detected by the leveler 291 may be displayed through the display unit 520 of the interface unit 500 to be described later.
- a separate gauge (not shown) may be provided on the interface unit 500 to display the measured value measured by the digital leveler.
- a warning output that outputs a warning message or a warning sound when the measured value measured by the leveler 291 exceeds a reference value, that is, when the wafer cassette 200 is not installed to be level (in position). A part (not shown) may be provided.
- the warning output unit may be controlled by a controller (not shown) to be described later. Horizontal adjustment of the wafer cassette 200 is made by the base plate 300, which will be described later.
- the first sensor 292 detects the presence of a wafer in the wafer cassette 200.
- the first sensor 292 may be provided on the lower surface 215 of the case 210 as illustrated in FIG. 8, but is not limited thereto.
- the first sensor 292 may be connected to the controller, and the controller may control the discharge of the purge gas to be stopped when it is determined that the wafer is not present in the wafer cassette 200 by the first sensor 292. have.
- the second sensor serves to detect whether the wafer loaded on the pins 223 and 232 of the mounting tables 221 and 231 of the wafer cassette 200 protrudes forward, that is, whether the wafer is loaded in place. do.
- the second sensor may be provided on the lower surface 215 of the case 210, but is not limited thereto.
- the second sensor may be connected to the control unit. If the second sensor determines that the wafer is not loaded in the correct position, the control unit may output a warning message or a warning sound through the warning output unit, and may move the wafer transfer robot arm of the EFEM. The wafer can be controlled to be loaded in place.
- the lighting unit 294 serves to shine light into the wafer cassette 200.
- the upper body 110 may include transparent plates 114a and 115a, and the wafer cassette 200 may also be made of a transparent material in the case 200, in which case the wafer is illuminated by the lighting unit 294.
- the lighting unit 294 may be, for example, an LED, but is not limited thereto.
- FIG. 10 is a cross-sectional view showing a coupling structure of the wafer cassette, the base plate and the upper body of the fume removing device according to the embodiment of the present invention.
- the fume removing apparatus may further include a base plate 300.
- the base plate 300 may be provided between the wafer cassette 200 and the partition 101 of the main body 100 to adjust the horizontal and the height of the wafer cassette 200. That is, the base plate 300 may include a horizontal adjustment structure.
- the base plate 300 may include, for example, a hollow 301, a height adjusting device 310, and a height fixing device 320.
- the purge gas supply coupling part 270 of the wafer cassette 200 may be inserted into the hollow 301 of the base plate 300.
- the height adjusting opening 310 of the base plate 300 may move up and down by rotation as shown in FIG. 4 to adjust the distance between the base plate 300 and the partition wall 101. As shown in FIG.
- the height fixture 320 of the base plate 300 penetrates the base plate 300 and is inserted into at least a portion of the partition 101 to fix the base plate 300 to the main body 100. can do.
- the height fixture 320 is provided as a screw, for example, but may be screwed to the main body 100, but is not limited thereto.
- the wafer cassette 200 itself may be directly provided with a structure for adjusting the horizontal and the height.
- the wafer cassettes 200 may be horizontal. The advantage is that there is no need to adjust.
- FIG. 11 is a perspective view showing an exhaust portion of a fume removing device according to an example of the present invention.
- the fume removing device may further include an exhaust part 400.
- the exhaust unit 400 may suck the fume generated from the wafer loaded in the wafer cassette 200 and the purge gas injected from the wafer cassette 200 and exhaust the fume gas to the outside.
- the exhaust unit 400 may include a lower hopper 410, a first exhaust pipe 420, a second exhaust pipe 430, an exhaust pump 440, and a connection port 450.
- the lower hopper 410 may be provided on the lower surface of the upper body 110 to the lower portion of the partition 101. That is, the lower hopper 410 may be provided inside the lower main body 120.
- the lower hopper 410 communicates with the fume outlet 119 of the upper body 110 to guide the flow of fume and purge gas discharged through the fume outlet 119.
- the lower hopper 410 may guide the fume and the purge gas discharged through the fume discharge port 119 to the first exhaust pipe 420.
- the lower hopper 410, together with the upper hopper 260 located in the upper body 110 forms a double hopper structure. In one example of the present invention, the backflow of the fume and the exhaust gas discharged through the double hopper structure can be minimized.
- the lower hopper 410 may have a streamlined structure with an open upper portion, thereby minimizing dead zones in which fumes and purge gases are stagnant.
- the first exhaust pipe 420 may connect the lower hopper 410 and the second exhaust pipe 430. That is, the fume and the exhaust gas introduced into the first exhaust pipe 420 through the lower hopper 410 may flow to the second exhaust pipe 430.
- the first exhaust pipe 420 may include, for example, a connection pipe (not shown) and a connection end 422.
- the connection pipe may couple the lower hopper 410 and the first exhaust pipe 420. Therefore, the connecting pipe may include a sealing member so that fume and exhaust gas do not leak from the connecting end.
- the connection end 422 is formed on the side of the first exhaust pipe 420 may be connected to a separate tube (not shown). As an example, the connection end 422 may be in communication with a tube (not shown) connecting the inside of the EFEM. In this case, there is an advantage in that the fluid such as fume inside the EFEM can be removed by installing only a relatively simple pipe structure.
- the connection end 422 is provided with an opening and closing member such as a damper may be controlled to open
- the second exhaust pipe 430 connects the first exhaust pipe 420 and the connection port 450. Inside the second exhaust pipe 430, for example, an exhaust pump 440 may be provided.
- the exhaust pump 440 may control the flow direction and speed of the fluid on the flow path leading to the upper hopper 260, the lower hopper 410, the first exhaust pipe 430, and the second exhaust pipe 430. That is, the fume and purge gas in the wafer cassette 200 may be discharged to the outside by the exhaust pump 440, and the discharge amount per unit time of the fume and purge gas may be increased or decreased.
- Exhaust pump 440 may be provided as a member for controlling the speed of the fluid by supplying compressed air through a compressor (not shown) without using a motor, hereinafter referred to as the compressed air discharge accelerator Can be.
- the compressed air supplied to the compressed air discharge accelerator may be replaced with another fluid.
- the vibration transmitted to the fume removing device is minimized as compared with the case of using a motor.
- the motor is required to be replaced continuously, but in the case of the compressed air discharge accelerator there is an advantage that can solve this problem.
- 11 illustrates the structure of the compressed air discharge accelerator in detail in cross section.
- the compressed air discharge accelerator includes a first body 441, a second body 442, an expansion part 443, a compressed air moving part 444, and a compressed air discharge part 445. can do.
- the first body 441 and the second body 442 may be provided in a shape corresponding to each other so as to be mutually coupled to each other as a hollow tube.
- the compressed air moving part 444 and the compressed air discharge part 445 may be provided between the first body 441 and the second body 442.
- the compressed air moving part 444 is a space through which the compressed air flowing through the external compressor can flow, and the compressed air discharge part 445 has the compressed air flowing through the compressed air moving part 444 as the first body.
- 441 and the second body 442 may be a passage flowing into the inside.
- the compressed air supplied to the compressed air discharge accelerator flows through the compressed air moving part 444, which is a space between the first body 441 and the second body 442, and passes through the compressed air discharge part 445. It is introduced into the first body 441 and the second body 442.
- the compressed air outlet 445 may be manufactured in various sizes.
- the compressed air discharge part 445 may be provided to be variable.
- the variable structure of the compressed air discharge part 445 may be realized by providing a relative movement between the first body 441 and the second body 442 as an example. In this case, since the amount of compressed air discharged through the compressed air discharge unit 445 is variable, the exhaust speed of the exhaust gas exhausted through the compressed air discharge accelerator may be changed.
- the second body 442 may include an expansion portion 443 having a diameter wider toward the lower portion.
- the compressed air introduced into the first body 441 and the second body 442 flows toward the wide portion of the expansion portion 443. This is because the pressure of the gas acting at the portion having a larger diameter than the portion having the smaller diameter is relatively small, so that the gas at the higher pressure tries to flow toward the lower pressure. That is, the expansion part 443 may serve to determine the direction of the flow of compressed air introduced into the first body 441 and the second body 442.
- the flow of compressed air in the compressed air discharge accelerator is generated as described above, the fume and purge gas in the wafer cassette 200 communicated through the upper hopper 260, the lower hopper 410, and the first exhaust pipe 430. It will also affect the direction and speed of the discharge.
- the compressed air discharge accelerator may further include a valve 446, a regulator 447, and an operating air pressure sensor 448 as components related to compressed air.
- the valve 446 may be a member that opens and closes a flow path of compressed air. That is, it may be determined whether to provide compressed air through the valve 446.
- the valve 446 may be, for example, an on / off valve, but is not limited thereto.
- the valve 446 may be a valve for controlling the passage amount of compressed air, such as a damper.
- the regulator 447 may maintain a constant speed or amount of compressed air passing through the regulator 477. That is, in one example of the present invention, the compressed air discharge accelerator may be provided at a predetermined amount or at a constant speed through the regulator 447.
- the actuating air pressure sensor 448 may sense the pressure of the compressed air provided to the compressed air discharge accelerator.
- the operating air pressure sensor 448 may be connected to a control unit, and the control unit may output the pressure value measured by the operating air pressure sensor 448 to the display unit 520 which will be described later, and the measured pressure value If it is different from the preset pressure value, a warning message can be output through the warning output unit.
- the exhaust pump 440 may be provided with a tube 575a which is at least partially provided inside and communicates with the exhaust pump 440.
- the tube 575a is connected to an exhaust gas pressure sensor 575 to be described later to measure the pressure of the exhaust gas passing through the exhaust pump 440.
- the tube 575a may be provided such that the end 575b faces the exhaust direction of the exhaust gas. In this case, a negative pressure is formed in the exhaust gas pressure sensor 575 connected to the tube 575a, and it is confirmed through a number of experiments that the exhaust pressure is measured more accurately when the end 575b of the tube 575a takes a different direction. It was.
- the connection port 450 may connect the second exhaust pipe 430 and the fume discharge port 123 of the lower main body 120. That is, the fume and the purge gas flowing to the exhaust pump 440 in the second exhaust pipe 430 through the connection port 450 may be discharged to the outside.
- the connection port 450 may be coupled to one side of the fume outlet 123 of the lower main body 120, and a discharge pipe (not shown) may be provided on the other side to discharge the fume and the purge gas to the outside.
- FIG. 12 is a perspective view showing an interface portion of a fume removing device according to an example of the present invention.
- the fume removing device may further include an interface unit 500.
- the interface unit 500 may include a plurality of configurations for the user to operate the operation of the fume removing device according to an example of the present invention.
- the interface unit 500 may be provided on the side surface 121 of the lower body 120 as an example, but is not limited thereto.
- the interface unit 500 is, for example, an EMO switch 510, a display unit 520, an operation unit 530, a compressed air gauge 540, a purge gas gauge 541, a communication port 550, and a compressed air connection port. 560 and purge gas connection port 570.
- the EMO switch 510 may quickly turn off the power in an emergency. That is, the @MO switch 510 may be an operation stop or power off button used in an emergency. That is, when the user presses the EMO switch 510, the purge gas supplied to the wafer cassette 200, the power delivered to the heating member 240, the compressed air delivered to the exhaust pump 440, and the operation are blocked. Can be stopped. Of course, a power switch separate from the EMO switch 510 may be provided.
- the display unit 520 may output a current operation state of the fume removing device according to an example of the present invention.
- the display unit 520 may output a measured value measured by the digital leveler, the first sensor 292, the second sensor, and the working air pressure sensor 448.
- the display unit 520 may function as a warning output unit and output a warning message if necessary.
- the display unit 520 may be connected to the control unit and controlled by the control unit.
- the display unit 520 may be provided as a touch screen to serve as the operation unit 530 to be described later.
- the interface unit 500 may further include a heater temperature controller 521 for controlling the heating member 240 for controlling the internal temperature of the wafer cassette 200 and outputting the temperature of the heating member 240.
- the heater temperature control unit 521 may be provided separately from the display unit 520 and the operation unit 530 to be described later, but if omitted, the heater temperature control unit 521 may be provided by the display unit 520 and the operation unit 530. Can be performed.
- the operation unit 530 may function as a means for inputting a command so that the user controls the operation of the fume removing device according to an example of the present invention.
- the user compresses the purge gas through the operation unit 530 and the supply pressure (supply amount, supply time), the temperature inside the wafer cassette 200 (while the heating member 240 is operated), and the exhaust pump 440. Whether or not air is supplied and supply pressure can be manipulated.
- the matter manipulated by the manipulation unit 530 may be configured to be output through the display unit 520 so that a user can check it.
- the compressed air gauge 540 may output the pressure of the compressed air provided to the compressed air discharge accelerator which is an example of the exhaust pump 440 of the exhaust unit 400.
- the compressed air gauge 540 may be connected to the working air pressure sensor 448 and output a pressure value sensed by the working air pressure sensor 448.
- the purge gas gauge 541 may output the pressure of the purge gas purged into the wafer cassette 200.
- the purge gas gauge 541 may be connected to the purge gas pressure sensor 573 to output a pressure value sensed through the purge gas pressure sensor 573.
- the communication port 550 may be provided to communicate with the EFEF and the semiconductor process main equipment. That is, a communication cable capable of communicating with other equipment may be connected to the communication port 550.
- the compressed air connection port 560 may be connected to an external compressor to supply compressed air to the compressed air discharge accelerator. That is, the compressed air discharged through the compressor may be supplied to the compressed air discharge accelerator through the compressed air connection port 560.
- the purge gas connection port 570 may be connected to an external purge gas supply source (not shown) to supply purge gas to the wafer cassette 200. That is, the purge gas discharged through the purge gas supply source may be supplied to the wafer cassette 200 through the purge gas connection port 570.
- the fume removing device further includes a valve 571, a regulator 572, a purge gas pressure sensor 573, and a filter 574 as a configuration for supplying a purge gas. can do.
- the valve 571 may be a member that opens and closes a flow path of the purge gas. That is, whether or not the purge gas is provided through the valve 571 may be determined.
- the valve 571 may be, for example, an on / off valve, but is not limited thereto.
- the valve 571 may be a valve that controls a passage amount of the purge gas, such as a damper.
- the regulator 572 may maintain a constant rate or amount of purge gas passing through the regulator 572. That is, in one example of the present invention, the purge gas may be provided to the wafer cassette 200 through the regulator 572 at a predetermined amount or at a constant speed.
- the purge gas pressure sensor 573 may sense the pressure of the purge gas provided to the wafer cassette 200.
- the purge gas pressure sensor 573 may be connected to a control unit, and the control unit may output a pressure value measured by the purge gas pressure sensor 573 to the display unit 520, and the measured input value is pre-set. If it is different from the set input value, a warning message can be output through the warning output unit.
- the filter 574 serves to filter the purge gas supplied through the flow path of the purge gas.
- the purge gas supplied may be nitrogen (N2), in which case unnecessary fluids may be filtered through the filter.
- the power connection port 580 may be coupled to a power cable for supplying power to the fume removing device according to an example of the present invention. That is, power may be supplied to the fume removing device through the power connection port 580.
- the fume removing device may further include an exhaust gas pressure sensor 575.
- the exhaust gas pressure sensor 575 may be connected to the tube 575a provided at least partially inside the exhaust pump 440 to sense the pressure of the exhaust gas (fume and purge gas) exhausted through the exhaust unit.
- the fume removing device may further include a control unit.
- the control unit includes a digital leveler, a first sensor 292, a second sensor, an operating air pressure sensor 448, a purge gas pressure sensor 573, a display unit 520, an operation unit 530, and a warning. It can be connected to the configuration of the output unit. That is, the controller may be connected to various sensors, a configuration for inputting an operation control command, a configuration for displaying the status of the operation, and the like, for controlling the operation of the fume removing device according to an example of the present invention. Can be controlled. However, even the configuration that is not mentioned can be controlled by the controller.
- FIG. 13 is a configuration diagram for explaining a flow path of purge gas, compressed air, and fume in the fume removing device according to an example of the present invention.
- the heating member 240 provided in the wafer cassette 200 is operated to adjust the temperature inside the wafer cassette 200 to a temperature set by a user.
- the wafers are stacked on the fins 223 of the first wafer accommodating portion 220 and the fins 232 of the second wafer accommodating portion 230 of the wafer cassette 200.
- a purge gas for example, nitrogen (N 2)
- N 2 nitrogen
- compressed air is supplied to the compressed air discharge accelerator of the exhaust unit 400.
- purge gas is supplied through a flow path from a purge gas supply source (not shown) (a).
- the purge gas supplied on the flow passage passes through a valve 571 which is opened or closed automatically or manually and is changed to a pressure preset by the user in the regulator 572 and supplied at a preset pressure by the purge gas pressure sensor 573. Whether it is being detected and filtered through the filter 574 is supplied into the wafer cassette 200.
- the purge gas filtered by the filter 574 is connected to the purge gas supply port coupling part 270 provided on the lower surface 215 of the wafer cassette 200 through the gas supply path 101a of the main body 100.
- the purge gas flow path 225 may be provided to have a larger diameter as it is located in front (see FIG. 8). In this case, the most purge gas flows to the first purge gas flow path 225b positioned at the most forward to be discharged to the first purge gas discharge port 226b.
- the second purge gas outlet 226c is provided on the inclined portion 222 protruding toward the center of the loaded wafer, so that the purge gas may flow even to the center of the wafer.
- the purge gas discharged into the wafer cassette 200 is formed on the back surface 214 of the wafer cassette 200 together with the process gas (fume) remaining on the surface of the wafer. Is discharged through).
- the fume and the purge gas discharged through the intake hole 251 are upper hopper 260, lower hopper 410, first exhaust pipe 420, second exhaust pipe 430, exhaust pump 440, and a connection port ( 450 may be sequentially discharged to the outside to flow. This process will be described below in detail with the supply of compressed air.
- Compressed air is discharged from a compressor (not shown) and supplied on a flow path (b).
- the compressed air supplied on the flow passage passes through a valve 446 which is opened or closed automatically or manually, and is changed to a pressure preset by the user in the regulator 447 and supplied at a preset pressure by the operating air pressure sensor 448. Is detected and then fed to a compressed air exhaust accelerator.
- the compressed air supplied to the compressed air discharge accelerator flows into the first body 441 and the second body 442 through the compressed air discharge part 445 after flowing the compressed air moving part 444.
- Compressed air introduced into the first body 441 and the second body 442 is flowed by the flow direction is determined by the expansion portion 443. That is, referring to FIG.
- the compressed air introduced into the first body 441 and the second body 442 flows toward the lower part of which the diameter of the expansion part 443 gradually increases.
- the compressed air flow also affects the inside of the wafer cassette 200, which is a communication space. Therefore, when the compressed air of higher speed or higher pressure of compressed air is supplied to the compressed air discharge accelerator, the velocity of the fume and purge gas discharged through the perforated plate 250 is also increased.
- the exhaust speed of the fume and the purge gas inside the wafer cassette 200 is controlled according to the compressed air supplied to the air amplifier, so that the upper hopper 260, the lower hopper 410, the first exhaust pipe 420, and the second exhaust gas are purged.
- the exhaust pipe 430, the exhaust pump 440, and the connection port 450 are sequentially flowed to be discharged to the outside (c).
- some of the fume and purge gas discharged to the outside may be introduced into the exhaust gas pressure sensor 575 to sense the pressure (d).
- the series of processes may be performed when a command is input through the operation unit 530 by the user, and various values such as the pressure of the purge gas and the pressure of the compressed air may be controlled.
- the information about the operation may be output through the display unit 520, the user can check the operation state through the case 210 of the upper body 110 and the wafer cassette 200 is at least partially provided transparently. It may be.
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Abstract
Description
Claims (34)
- 웨이퍼가 적재되는 웨이퍼 카세트; 및상기 웨이퍼 카세트에 적재된 웨이퍼의 퓸을 배기하는 배기부를 포함하며,상기 웨이퍼 카세트는,양측면에 구비되어 웨이퍼가 적재되는 적재대; 및전방에 구비되어 상기 적재대에 적재되는 웨이퍼가 출입하는 전방 개구부를 포함하며,상기 적재대는, 상기 전방 개구부로 갈수록 상기 적재대에 적재된 웨이퍼를 향하여 경사지게 구비되는 경사부를 포함하며,상기 경사부에는 상기 적재대에 적재된 웨이퍼에 퍼지 가스를 공급하는 퍼지 가스 배출구가 구비되는 퓸 제거 장치.
- 제 1 항에 있어서,상기 전방 개구부에서의 양측면에 구비되는 적재대 사이의 공간은, 상기 웨이퍼 카세트에 적재되는 웨이퍼의 직경 보다 작은 퓸 제거 장치.
- 제 1 항에 있어서,상기 퍼지 가스 배출구는 다수가 구비되어 적어도 일부가 상기 경사부에 구비되며,상기 적재대는 상기 적재대로 유입되는 퍼지 가스를 상기 퍼지 가스 배출구로 유동시키는 퍼지 가스 유로를 더 포함하며,상기 퍼지 가스 유로는, 메인 유로 및 상기 메인 유로로부터 상기 다수의 퍼지 가스 배출구 각각으로 분지되는 다수의 분지 유로를 포함하며,상기 다수의 분지 유로 각각은 상기 메인 유로와 둔각을 이루도록 배치되는 퓸 제거 장치.
- 제 1 항에 있어서,상기 퍼지 가스 배출구는 다수가 구비되어 적어도 일부가 상기 경사부에 구비되며,상기 다수의 퍼지 가스 배출구는 상기 전방 개구부 측에 가깝게 배치되는 퍼지 가스 배출구일수록 직경이 크게 구비되는 퓸 제거 장치.
- 제 1 항에 있어서,상기 적재대는 상기 웨이퍼 카세트 내부에서 웨이퍼가 상하로 적층될 수 있도록 상하로 이격 구비되며,상기 퍼지 가스 배출구는 상기 상하로 이격 구비된 적재대 각각에 구비되어 상하로 적층된 웨이퍼 각각에 퍼지 가스를 공급하는 퓸 제거 장치.
- 제 1 항에 있어서,상기 적재대는 웨이퍼를 지지하는 핀을 더 포함하는 퓸 제거 장치.
- 제 1 항에 있어서,상기 웨이퍼 카세트는 적어도 일부가 투명하게 구비되는 퓸 제거 장치.
- 제 1 항에 있어서,후면에 구비되어 상기 웨이퍼 카세트와 상기 배기부를 연통시키는 타공판을 더 포함하며,상기 타공판은 상부로 갈수록 폭이 길게 구비되는 다수의 흡기공을 포함하는 퓸 제거 장치.
- 제 1 항에 있어서,상기 배기부는 압축 공기를 공급하여 상기 웨이퍼 카세트에 적재된 퓸의 배기 압력을 제어하는 압축 공기 배출 가속기를 포함하는 퓸 제거 장치.
- 제 1 항에 있어서,상기 압축 공기 배출 가속기 내부에는 퓸의 배기 압력을 감지하는 배기 가스 압력 센서와 연통되는 튜브가 구비되며,상기 튜브의 말단은 상기 압축 공기 배출 가속기를 통해 배기되는 퓸의 배기 방향을 향하도록 구비되는 퓸 제거 장치.
- 제 1 항에 있어서,상기 웨이퍼 카세트 내부에 웨이퍼의 존재 여부를 감지하는 제 1 센서를 더 포함하는 퓸 제거 장치.
- 제 1 항에 있어서,상기 웨이퍼 카세트에 적재된 웨이퍼가 정위치에 적재되었는지 여부를 감지하는 제 2 센서를 더 포함하는 퓸 제거 장치.
- 제 1 항에 있어서,상기 웨이퍼 카세트 내부를 조명하는 조명부를 더 포함하는 퓸 제거 장치.
- 제 1 항에 있어서,상기 웨이퍼 카세트 내부를 가열하는 가열부재를 더 포함하며,상기 가열부재는,상기 웨이퍼 카세트의 케이스의 상면에 구비되는 상부 히터;상기 웨이퍼 카세트의 케이스의 하면에 구비되는 하부 히터; 및상기 웨이퍼 카세트의 케이스의 측면에 구비되는 봉 히터를 포함하는 퓸 제거 장치.
- 본체;상기 본체에 탈착 가능하게 구비되며, 웨이퍼가 적재되는 웨이퍼 카세트; 및상기 본체에 구비되며, 상기 웨이퍼 카세트에 적재된 웨이퍼의 퓸을 배기하는 배기부를 포함하며,상기 웨이퍼 카세트는,상기 웨이퍼 카세트에 적재된 웨이퍼를 상면, 양측면 및 하면을 통해 둘러싸는 케이스;상기 케이스의 양측면에 구비되며, 다수의 웨이퍼가 적층되도록 다수가 상하로 이격 구비되는 적재대; 및상기 케이스의 후면에 구비되어 상기 웨이퍼 카세트와 상기 배기부를 연통시키는 타공판을 포함하며,상기 적재대는 다수로 구비되는 적재대 각각에 구비되어 퍼지 가스를 공급하는 퍼지 가스 배출구를 포함하며, 상기 퍼지 가스 배출구를 통해 웨이퍼로 공급된 퍼지 가스는 상기 웨이퍼 카세트 외부로 누출되지 않고 적층된 웨이퍼 사이를 유동하여 상기 타공판을 통해 배기부로 배기되는 퓸 제거 장치.
- 제 15 항에 있어서,상기 적재대는 웨이퍼를 지지하는 면적을 최소화하는 핀을 더 포함하는 퓸 제거 장치.
- 제 16 항에 있어서,상기 적재대는 상기 핀에 적재된 웨이퍼와 상기 케이스의 양측면 사이의 공간에 대응하는 폭을 가지도록 형성되는 퓸 제거 장치.
- 제 15 항에 있어서,상기 웨이퍼 카세트 및 상기 본체를 연결하여 상기 웨이퍼 카세트 및 본체 사이의 공간에 퍼지 가스가 유입되는 것을 방지하는 베젤을 더 포함하는 퓸 제거 장치.
- 제 15 항에 있어서,상기 웨이퍼 카세트 및 본체 사이에 구비되며, 수평 조절이 가능한 베이스 플레이트를 더 포함하며,상기 웨이퍼 카세트는 상기 베이스 플레이트에 착탈 가능하게 안착되는 퓸 제거 장치.
- 제 19 항에 있어서,상기 웨이퍼 카세트는 상기 베이스 플레이트에 안착되는 때에 수평이 맞지 않는 경우 이상 신호를 출력하는 디지털 레벨러를 더 포함하는 퓸 제거 장치.
- 제 15 항에 있어서,상기 본체는 외부로부터 공급되는 퍼지 가스가 공급되는 퍼지 가스 공급구를 포함하며,상기 웨이퍼 카세트는 상기 퍼지 가스 공급구와 대응하는 형상으로 구비되어 상기 퍼지 가스 공급구와 선택적으로 결합되는 퍼지 가스 공급구 결합부를 포함하며,상기 퍼지 가스 공급구 결합부가 상기 퍼지 가스 공급구와 결합되는 경우 상기 퍼지 가스 공급구로 공급된 퍼지 가스는 상기 퍼지 가스 공급구 결합부를 통해 상기 적재대의 퍼지 가스 배출구로 배출되는 퓸 제거 장치.
- 제 21 항에 있어서,상기 퍼지 가스 공급구는 돌기를 포함하며,상기 퍼지 가스 공급구 결합부는 상기 돌기와 대응하는 형상을 갖는 홈을 포함하며,상기 퍼지 가스 공급구에 상기 퍼지 가스 공급구 결합부가 결합되는 경우 상기 홈에 상기 돌기가 삽입되는 퓸 제거 장치.
- 제 15 항에 있어서,상기 본체의 하단에는 회전이 가능한 케스터, 및 상하로 유동하여 상기 본체를 고정시킬 수 있는 레벨러가 구비되는 퓸 제거 장치.
- 제 15 항에 있어서,상기 본체의 외측에는 인터페이스부가 구비되며,상기 인터페이스부는 작동상태를 출력하는 디스플레이부를 포함하는 퓸 제거 장치.
- 제 24 항에 있어서,상기 인터페이스부는 외부와 통신이 가능한 통신 포트를 더 포함하는 퓸 제거 장치.
- 제 15 항에 있어서,상기 본체에는 상기 웨이퍼 카세트 및 배기부를 연통시키는 퓸 배출구가 구비되며,상기 퓸 배출구는 위치가 가변될 수 있는 퓸 제거 장치.
- 웨이퍼가 적재되는 웨이퍼 카세트; 및상기 웨이퍼 카세트에 적재된 웨이퍼의 퓸을 배기하는 배기부를 포함하며,상기 웨이퍼 카세트는,양측면에 구비되어 웨이퍼가 적재되는 적재대; 및상기 적재대에 구비되어 상기 적재대에 적재된 웨이퍼에 퍼지 가스를 공급하는 퍼지 가스 공급구를 포함하며,상기 배기부는,유체를 공급하여 상기 웨이퍼 카세트에 적재된 퓸의 배기 속도를 제어하는 압축 공기 배출 가속기를 포함하는 퓸 제거 장치.
- 제 27 항에 있어서,상기 압축 공기 배출 가속기는,공급된 유체가 상기 압축 공기 배출 가속기 내부로 유입되는 압축 공기 배출부; 및공급된 유체가 상기 압축 공기 배출부 전체에 고르게 유입되도록 형성되는 압축 공기 이동부를 포함하는 퓸 제거 장치.
- 제 28 항에 있어서,상기 압축 공기 배출 가속기는,상기 압축 공기 배출부를 통해 유입되는 유체의 흐름 방향을 유도하도록 상기 퓸의 배기 방향을 향하여 확관되도록 구비되는 확관부를 더 포함하는 퓸 제거 장치.
- 제 28 항에 있어서,상기 압축 공기 배출부는 크기가 가변될 수 있는 퓸 제거 장치.
- 제 27 항에 있어서,상기 압축 공기 배출 가속기로 공급되는 유체의 압력을 제어하는 레귤레이터; 및퓸의 배기 압력을 감지하는 배기 가스 압력 센서를 더 포함하며,상기 레귤레이터는 상기 배기 가스 압력 센서에 의해 측정된 퓸의 배기 압력과 대기압의 비교를 통해 제어되는 퓸 제거 장치.
- 제 31 항에 있어서,상기 압축 공기 배출 가속기 내부에는 상기 배기 가스 압력 센서와 연통되는 튜브가 구비되며,상기 튜브의 말단은 상기 압축 공기 배출 가속기를 통해 배기되는 퓸의 배기 방향을 향하도록 구비되는 퓸 제거 장치.
- 제 27 항에 있어서,상기 웨이퍼 카세트에는 상기 배기부와 연통되는 다수의 흡기공을 포함하는 타공판이 구비되며,상기 타공판을 통과한 웨이퍼의 퓸은 적어도 일부가 유선형 형상을 갖는 상부 호퍼에 의해 가이드되어 상기 배기부로 유동하는 퓸 제거 장치.
- 제 33 항에 있어서,상기 상부 호퍼에 의해 가이드되어 상기 배기부로 유동된 퓸은 배기부의 하부 호퍼에 의해 다시 가이드되어 배출되는 퓸 제거 장치.
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US15/113,221 US11114325B2 (en) | 2014-01-21 | 2015-01-16 | Fume-removing device |
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US15/986,479 US10714367B2 (en) | 2014-01-21 | 2018-05-22 | Fume-removing device |
US15/987,844 US11201071B2 (en) | 2014-01-21 | 2018-05-23 | Fume-removing device |
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KR102323354B1 (ko) | 2016-07-06 | 2021-11-09 | 우범제 | 웨이퍼 수납용기 |
KR101865636B1 (ko) * | 2016-07-06 | 2018-06-08 | 우범제 | 웨이퍼 수납용기 |
KR101756743B1 (ko) * | 2016-12-30 | 2017-07-12 | 김태훈 | 웨이퍼 가공 설비용 버퍼 챔버 유닛 |
KR101821759B1 (ko) * | 2017-03-02 | 2018-03-08 | 최동현 | 반도체 소자 제조용 가스공급장치의 누설 가스 풍속과 차압 디지털 측정 장치 및 방법 |
TWI717034B (zh) | 2017-06-23 | 2021-01-21 | 美商應用材料股份有限公司 | 側儲存倉、電子裝置處理系統、和處理基板的方法 |
US10388547B2 (en) | 2017-06-23 | 2019-08-20 | Applied Materials, Inc. | Side storage pods, equipment front end modules, and methods for processing substrates |
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US20180277410A1 (en) | 2018-09-27 |
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CN105960705B (zh) | 2019-03-12 |
US11152239B2 (en) | 2021-10-19 |
US11201071B2 (en) | 2021-12-14 |
TWI604554B (zh) | 2017-11-01 |
TW201541537A (zh) | 2015-11-01 |
KR20150087015A (ko) | 2015-07-29 |
US20180269093A1 (en) | 2018-09-20 |
US11114325B2 (en) | 2021-09-07 |
US20170011942A1 (en) | 2017-01-12 |
US20180269092A1 (en) | 2018-09-20 |
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